Coupling for shafts.



C. O. LANDGRBBE.

COUPLING FOR SHAPTS.

APPLIOATION FILED NOV.'2Z,1913.

1 1 20,5 1 O. atented Dec. 8, 1914.

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Specification of Letters Patent.

Patented Dec. 8, 1914.

Application filed llovember 22, 1918. Serial R0. 802,484.

To all whom it may concern Be itdknown that I, CARL 'O'rro Lana emcee, a subject of the King of Prussia, residing at Dresden, Germany, have invented certain new and useful Im rovements in Couplings for Shafts, of WhlCh the following is a specification.

My invention relates to a coupling for machine parts(espec1ally shafts) which, in addition to the purely axial movement, must also be able to have a movement at anangle. According to this invention these coupling parts are so constructed that both the axial and the angular movement are performed with a minimum of friction. One machine part may, for example, end in a coupling sleeve provided with ribsarrauged axially While the other may end mono or more disks shaped to correspond with the inner cross section of the coupling sleeve, around the: circumference of which disks balls are suitably embedded, facilitating the axial movement of the parts and allowing of the, angular movement.

It has, of'course, already been proposed to introduce ball hearings in the case of machine parts moving axially with regard to one another, with the object of reducingthe friction as much'as possible. In the present case however, there is the question of providing not only for'the axial movement but also for the relative angular movement of the machine parts, without friction being set up.

The object of the invention is represented in the accompanying drawings in two constructions, as follows Figure 1 shows in elevation and section a construction whereby a movement of the coupled parts in both directions of rotation is rendered possible. Fig. 2 is a plan'of fieferring first to the couplin represented in Figs. 1 and 2, one shaft, or example,

iballs the driven shaft a, has a coupling sleeve 6 which is provided internally with axially arranged projections or ribs e forming between each other hollows or grooves d. The shaft -c carries at the end arms f on which disks 9, It, forming ball cages, are fixed bysmeans of screws n. In these d sks holes are made between which the balls in, projectin beyond the edges of the disks, are embed ed.

In Fig. 1 the parts, when moving am'ally one with respect to the other, are represented by ful and the, ball cages or beds connected therewith are shown in the angular position by dotted lines.

I do claim 1. Coupling for shafts comprising in combination, a driven shaft, a couplin sleeve provided with inner axially arrang projections, a driving shaft provided with arms, holding disks secured to said arms and rovided with. circular openings and etween said holding disks resting displaceably'in said openings and having a diameter larger than the distance between said disks, substantially as described.

2. Coupling for shafts comprising in combination, a driven shaft, a coupling sleeve provided with inner axially arran d pro- ]ections, a driving shaft, providiii with arms, ball cages secured to the ends of said arms and ."ivided with' holes, and balls projecting yond the edges of said cages and embedded between said holes, substantially as described and for the purpose set forth.

In testimony whereer I have h reunto set my hand in presence of two subscribing witnesses.

' CARL OTTO LANDGREBE'. Witnesses 1 lines, while the driving shaft 0 

